Rellax is a buttery smooth, super lightweight, vanilla javascript parallax library. Update: Rellax now works on mobile (v1.0.0). Have any suggestions or feedback? Reach out @dixonandmoe npm install rellax --save or if you're old school like us download and insert rellax.min.js Use the data-rellax-speed attribute to set the speed of a .rellax element to something other than the default value (which is -2).